Marauder Accuracy Problems

I have been having problems with my Marauder with flyers. It will group well for a few shots then have a couple of flyers and I am pretty sure that its the baffles and endcap that is causing the issue. I called up crosman today because I had read that they had redesigned the baffles and endcap. I told the lady at customer service the problem that I was having and what I had read here she said that right now they don't have a "trade in program" on the baffles and endcap that I could purchase new ones. I have had this airgun since june and I have tried tips that I have read here trying to fix my problem but I havent had any luck with getting it corrected. The only thing I have not tried is drilling out the baffles and endcap because I am afraid of not getting them drilled out straight and making the problem worse. I am just mad because I thought that a call to Crosman would get this problem fixed guess I was wrong about that.